Checkbox inside the Fragment - capturing checks/unchecks

Question

I'm trying to recieve checkbox choices inside my Fragment class, however I'm not able to use the way I've used in Activities (calling android:onClick="onCheckboxClicked" method from a layout.xml), because I get the "method onCheckboxClicked not found" everytime this method is called.

public void onCheckboxClicked(View view) {
    // Is the view now checked?
    boolean checked = ((CheckBox) view).isChecked();

    // Check which checkbox was clicked
    switch(view.getId()) {
        case (R.id.checkBox_wifi):
            if (checked)    {
                editor.putBoolean("wifi_on_off", true);
            }
            else    {
                editor.putBoolean("wifi_on_off", false);
            }
            break;

    }

    editor.apply();
}

So, I've implemented the View.OnClickListener, but this doesn't get any checkbox checks/unchecks:

 @Override
public void onClick(View view) {
    switch (view.getId()) {
        case R.id.checkBox_wifi:
            boolean checked = ((CheckBox) view).isChecked();

            if (checked) {
                editor.putBoolean("wifi_on_off", true);
            } else {
                editor.putBoolean("wifi_on_off", false);
            }

            editor.apply();
            break;

    }
}

The implementations are found in fragment? – gunar Oct 14 '13 at 10:05 — gunar, Oct 14 '13 at 10:05

score 5 · Accepted Answer · edited Oct 14 '13 at 10:20

    @Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
    View rootView = inflater.inflate(R.layout.fragmentlayout, container,false);

    CheckBox checkboxvariable=(CheckBox)rootView.findViewById(R.id.checkboxid);

    checkboxvariable.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {


            if(v.isChecked()){ //do this}
            else { //do this }

        }
    });
    return rootView;
}

checkboxvariable.setOnClickListener(this.getActivity());

inside onClick you can get the resource id, R.id.checkboxid.

score 2 · Answer 2 · edited May 23 '17 at 11:51

Any onClick XML attribute will mean that the method must be found in the activity, not in the fragment, not in the View. So the way I see it, you have two options:

Add the method in the Activity and inside the implementation try to find the fragment and if found, delegate the call to the fragment.
Remove the XML onClick and rely on OnClickListeners that you define in Java code. This subject was already discussed in at least this thread.

score 1 · Answer 3 · answered Mar 09 '18 at 07:33

public class MyFragment extends Fragment {

    CheckBox myCheckBox;

    @Override
    public View onCreateView(LayoutInflater layoutInflater, ViewGroup container, Bundle saveInstanceState) {
        rootView = layoutInflater.inflate(R.layout.your_fragment_layout, container, false);
        ...
        ...
        initViews();
        return rootView;
    }

    private void initViews() {
        myCheckBox = (CheckBox) rootView.findViewById(R.id.my_check_box);
        myCheckBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton compoundButton, boolean isChecked) {
                if (isChecked)
                    Log.d("TAG=>isChecked", "True");//replace your own stuffs here
                else
                    Log.d("TAG=>isChecked", "false");//replace your own stuffs here
            }
        });
    }
}

You can set this listener for n number of checkbox!!!

murt · Answer 4 · 2015-11-17T21:39:43.107

Just use your custom Listener

CompoundButton.OnCheckedChangeListener

inside any other view then Activity. Below code sample

public class MyFragment extends Fragment{

  public View onCreateView(...){
    ...
    CheckBox cbFilter = (CheckBox) rootView.findViewById(R.id.chb_rt_is_filter);
    cbFilter.setOnCheckedChangeListener(myCheckboxListener);
    return rootView;
  }

   private CompoundButton.OnCheckedChangeListener myCheckboxListener = new CompoundButton.OnCheckedChangeListener() {
    @Override
    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
        switch (buttonView.getId()){
            case R.id.chb_rt_is_filter:
                break;
            default:
                break;
        }
    }
};
}

Checkbox inside the Fragment - capturing checks/unchecks

4 Answers4